4
2
1
7
9
6
6
3
5
9
8
7

This Sudoku Puzzle has 7 steps and it is solved using Locked Candidates Type 2 (Claiming), Give Up techniques.

Locked Candidates Explanation
Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 2 (Claiming): 3 in r3 => r1c789,r2c789<>3
  2. Locked Candidates Type 2 (Claiming): 5 in r3 => r1c789,r2c789<>5
  3. Locked Candidates Type 2 (Claiming): 8 in r3 => r1c789,r2c789<>8
  4. Locked Candidates Type 2 (Claiming): 1 in r4 => r5c789,r6c789<>1
  5. Locked Candidates Type 2 (Claiming): 2 in r4 => r5c789,r6c789<>2
  6. Locked Candidates Type 2 (Claiming): 4 in r4 => r5c789,r6c789<>4
  7. Give Up: Don't know how to proceed!
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